UFOs: The Lost Evidence

Though claims of extraterrestrial encounters have long been dismissed, many believe the existence of UFOs is not just likely, but a certainty.

Mass UFO sightings from the last 50 years fuel a mystery in this documentary series featuring eyewitness accounts, expert interviews and new evidence.

Investigates a wide range of historically compelling topics and the mysteries surrounding each including the Titanic, D.B. Cooper, Roswell, John Wilkes Booth, and more. Fresh, new evidence and perspectives will be showcased, such as never-before-released documents, personal diaries and DNA evidence.

Maritime mysteries—old and new—come to life in this series, combining scientific data and digital re-creations to reveal shipwrecks, treasures, and sunken cities on the bottom of lakes, seas and oceans around the world.

In this true-crime documentary, a cult expert and filmmaker infiltrate a polygamist sect to expose a self-proclaimed prophet and bring him to justice.

Explore the surprising things we know (and don’t know) about why people are the way they are through expert interviews, rare footage from historical experiments, and brand-new, ground-breaking demonstrations of human nature at work.

Infographics and archival footage deliver bite-size history lessons on scientific breakthroughs, social movements and world-changing discoveries.

Filmed across six continents, this docuseries uses cutting-edge camera technology to capture animals' nocturnal lives, revealing new behaviours filmed in full color like never before.

This documentary series, made in partnership with Vox, explain some of the world's current trends, from politics, to science to pop culture.

In Search of... is a TV series that was broadcast weekly from 1977 to 1982, devoted to mysterious phenomena. It was created after the success of three one-hour TV documentaries produced by creator Alan Landsburg: In Search of Ancient Astronauts in 1973, In Search of Ancient Mysteries and The Outer Space Connection, both in 1975. All three featured narration by Rod Serling, who was the initial choice to host the spin-off show. After Serling's death, Leonard Nimoy was selected to be the host.